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Cation distribution in the tetragonal spinel MgMn 2 O 4

โœ Scribed by Radhakrishnan, N. K.; Biswas, A. B.

Book ID
120551318
Publisher
Oldenbourg Wissenschaftsverlag
Year
1975
Tongue
English
Weight
219 KB
Volume
142
Category
Article
ISSN
2194-4946

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โœฆ Synopsis

Abstract

The cation distribution in the tetragonal spinel magnesium manganite has been determined by neutron diffraction. The degree of inversion has been found to be about 20 per cent. The values of the oxygen parameters as well as the interionic distances have also been calculated.

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It is widely known that CoAl 2 O 4 , IV (Co 12x Al x ) VI [Co x Al 22x ]O 4 , is a largely normal spinel รฐ0 , x , 2=3รž; but this cation distribution cannot be explained by the effects of cation size, electronegativity and ligand-field of Co 2รพ . To examine the reason for this peculiar cation distrib